private void pbIter_Click(object sender, EventArgs e)
        {
            if (!Verification(Polindrome, rootInterval, lbIterRoot))
            {
                return;
            }

            lbIterRoot.Text = Eq.Iteration(Polindrome, Pol_Dx, rootInterval, rootAccuracy).ToString();
        }
        private void pbDihotomy_Click(object sender, EventArgs e)
        {
            if (!Verification(Polindrome, rootInterval, lbDihotomyRoot))
            {
                return;
            }

            lbDihotomyRoot.Text = Eq.Dichotomy(Polindrome, rootInterval, rootAccuracy).ToString();
        }